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0xcrypto
0xcrypto

Posted on • Originally published at hackberry.xyz on

Open Redirect in Flattr

Summary

This bug in Flattr was a low impact Open Redirect that allowed attacker to redirect the victim after authorizing Twitter.

PoC

https://flattr.com/settings/connect/twitter?redirect=https://hackberry.xyz

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Timeline

  • Found vulnerability - 5th June, 2020
  • Made contact with Flattr - 5th June, 2020
  • Reported vulnerability - 9th June, 2020
  • Bug fixed - 11th June, 2020

Reference

  1. https://cwe.mitre.org/data/definitions/601.html

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